रिपोर्ट · 15 October 2026

282 AQI at NSIT Dwarka, 24 hours to 4 PM, 15 October 2026, the worst monitor in Delhi today, Poor on CPCB's documented formula, and PM2.5 set that figure. 13.2 lakh people live within 4 km of it.

148.4

TODAY

Delhi's AQI calculated with CPCB's documented formula, the mean of 57 stations.

1.88 crore

NEAR MODERATE OR WORSE

Within 4 km of 54 Moderate-or-worse monitors: 89.8 per cent of Delhi, every pollutant counted.

4.8x

THE WHO 24-HOUR LINE

Delhi's PM2.5 today, as measured, against the WHO 24-hour guideline.

यहाँ के एक्यूआई आँकड़े उसी फ़ॉर्मूले से निकाले गए हैं, जो केंद्रीय प्रदूषण नियंत्रण बोर्ड (CPCB) अपने वायु गुणवत्ता सूचकांक के लिए प्रकाशित करता है। यह फ़ॉर्मूला CPCB ने अपने दस्तावेज़ों में दिया है: CPCB का नोट: एक्यूआई कैसे निकाला जाता है; CPCB का एक्यूआई कैलकुलेटर।
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दिन का सार

Today, 15 October 2026, 24 hours to 4 PM: Delhi's AQI was 148.4, Moderate, calculated with CPCB's documented formula as the mean of 57 stations' AQIs (CPCB's note "How is AQI calculated?" and its AQI Calculator; page 33 sets out the formula). As measured, 44 of the 44 monitors reading PM2.5 were above the WHO 24-hour guideline of 15 µg/m³. Above AQI 200 today: 6 stations, NSIT Dwarka 282, Vivek Vihar 238, R K Puram 230, Sonia Vihar 225, and 2 more in the station table. Poor or worse air reached 76.3 lakh people within 4 km of their monitor today, 36.4 per cent of Delhi.

The year so far, 1 January to 14 October: the cleaner days of 2026 have been the dirtiest for these dates since 2019, because three days in four read above 106.4 on the particle AQI, against 89.7 on the same dates of 2025. The middle day reads 152.8 against 135.3 on the same dates last year. On an average day, 26.8 per cent of Delhi's reporting monitors, about 11 of 43, sat above 200 on the particle AQI.

निष्कर्ष

रिपोर्ट क्या कहती है

यह रिपोर्ट अंग्रेज़ी में है।

Against yesterday: the one-day move

From 190 to 148. On the 57 stations that reported on both days, the 95 per cent interval runs -51.7 to -30.3 points.

Against last year: the observed reading

Today 148 across 57 stations. The year is judged on the 38 matched stations: 163 today against 239, the mean of the same date ±7 days of 2025 at those stations. The interval runs -92.6 to -59.1 points.

The worst station in the city today

Poor, set by PM2.5. Its PM2.5 averaged 119.3 µg/m³ over the 24 hours to 4 PM, 7.9 times the WHO 24-hour guideline of 15 µg/m³. Last year this station read 187 on the mean of the same date ±7 days, so the change is +94.9 points. 13.2 lakh people live within 4 km of this monitor. Within 500 m of the monitor, 83% of the land is built up and 17% is under vegetation, so this reading describes a densely built neighbourhood.

The year, from its best days to its worst

On the same 287 complete dates, 1 January to 14 October, the best tenth of days reads 75.1 against 72.0 and the worst tenth 289.2 against 282.5. The days at or below 200 went from 211 to 209.

How much of the city was above AQI 200

That is 11.2 of 43.4 reporting stations, against 25.2 per cent over the same dates last year, a change of +1.6 points on an interval of -3.3 to +6.7, so it is unchanged inside its margin.

Who the monitoring network reaches

Within 4 km live 92 per cent of Delhi's people, within 2 km 45 per cent, and within 500 m only 3.6 per cent. Delhi has 55 monitors in 53 zones, of which 57 reported today, and 30 of the 53 zones stretch past 4 km, the distance that the US EPA's neighbourhood scale treats as the furthest a monitor speaks for.

What each monitor's reading speaks for

That is 36.4 per cent of Delhi, living around the 6 monitors that read Poor or worse. NSIT Dwarka was worst at 282, and 13.2 lakh people live within 4 km of it. On the wider count, 1.88 crore people, 89.8 per cent of Delhi, live within 4 km of a monitor at Moderate or worse.

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